Turbo-charged Infiniti Q50 Signature Read Next The newest addition to the Infiniti Q50 line isn’t your typical dad sedan. Unless your dad is a regular on top movers-and-shakers lists. We can’t wait to get our hands on the sharp new Infiniti Q50 Signature Edition, a limited production four-door sedan featuring a sophisticated Saddle Brown leather interior, exclusive exterior features, and a powerful 300-horsepower, twin-turbo V6 in rear- or all-wheel drive. Highlights for the Q50 Signature Edition are polished 19-inch sport aluminum-alloy wheels, sport seats, and a dark chrome grille. Available in Dynamic Sunstone Red, Grand Blue, Majestic White, or Midnight Black, the Signature Edition is priced at $48,200 MSRP for a rear-wheel-drive model, or $50,200 MSRP with INFINITI’s Intelligent All-Wheel Drive.